Touch sensing apparatus and method for assembly
AssigneeFlatFrog Laboratories AB
InventorsDaniel Skagmo, Robert Ehn, Hakan Bergstrom
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Abstract
A touch sensing apparatus is disclosed comprising a panel that defines a touch surface, a plurality of light emitters and detectors arranged along a perimeter of the panel. The light emitters are arranged to emit a respective beam of emitted light that travels above the touch surface, wherein the light detectors are arranged to receive detection light from the emitted light. The plurality of light emitters and detectors are arranged above the touch surface and are connected to a substrate extending in a direction parallel with a normal axis of a plane in which the panel extends. A method of assembling a touch sensing apparatus is also disclosed.
Claims8
A touch sensing apparatus, comprising:
- a plate comprising a touch surface, a back surface, and an edge surface;
- a frame assembly configured to support the plate;
- and
- an optical element positioned above the touch surface, said optical element comprising a first surface configured to receive light propagating across a touch interacting portion of the touch surface and a second surface opposite the first surface, second surface configured to receive light directly from an emitter or a reflecting surface, wherein said first surface comprises a light collimating surface.
Dependencies are inferred from the claim text.